Mosquito repellent for babies and kids: what's safe at every age
Dengue doesn't check passports, and the rules don't bend for a long-haul flight. What CDC and pediatricians actually say at each age, how to get repellent onto a toddler who won't hold still, and what pregnant travelers should check before they book.
Under 2 months: no repellent at all. Netting over the carrier or stroller, covering clothes, screened or air-conditioned sleep. From 2 months: DEET at 30% or less (the American Academy of Pediatrics' cap), picaridin or IR3535, rubbed on from your own hands and kept off theirs. Lemon eucalyptus (OLE) or PMD: not under 3, per CDC. Pregnant? CDC says EPA-registered repellents are safe when used as directed. The bigger question is where you're going, so check CDC's travel notices for Zika and Oropouche before you book.
Few travel questions arrive with as much worry attached as this one, usually typed one-handed at 2am: we're flying to a dengue country with a three-month-old, what can I actually put on her? The answer is reassuringly short, and it hinges on a single number: two months. Below that line, you protect a baby with fabric and walls. Above it, the same repellents adults use are fine, with a few house rules.
You'll see slightly different numbers in different places. EPA's registration sets no minimum age for DEET, picaridin or IR3535, while CDC's consumer advice and the American Academy of Pediatrics draw the line at two months. Where official sources differ, this page follows the stricter one.
The age ladder
Barriers only
- No insect repellent of any kind (CDC, AAP)
- Mosquito netting over the stroller, carrier and cot
- Light clothing that covers arms and legs
- Sleep in screened or air-conditioned rooms; naps too, since dengue mosquitoes bite by day
The registered three
- DEET at 30% or less (AAP), picaridin, or IR3535, following the label's directions for children
- Not oil of lemon eucalyptus or PMD: CDC says not under 3, and most labels agree
- Permethrin goes on clothing and gear, never on skin; EPA rates treated clothing "unlikely to pose any significant" hazard, toddlers who chew their sleeves included
- An adult applies it, every time
The full menu
- Everything above, plus registered OLE or PMD products (roughly 4–6 hours a coat)
- Keep DEET at 30% or less; that's plenty for a day out, and higher strengths only last longer
- Still adult-applied: EPA's label language says not to let children handle repellent
Same menu as any adult
- CDC: when used as directed, EPA-registered repellents are "proven safe and effective, even for pregnant and breastfeeding women"
- EPA asks for no extra precautions, and reports no evidence of reproductive or developmental effects from permethrin-treated clothing
- The real decision is the destination; see the Zika and Oropouche section below
"Natural" is not a baby category. The strongest plant-based repellent, OLE, is exactly the one CDC keeps off under-3s, while the lab-made picaridin is fine from two months. Essential-oil blends sold as "gentle" have neither safety data for infants nor the hours to justify the risk. We tested the botanical aisle honestly in our natural repellents ranking.
Putting it on a toddler who won't hold still
Children aren't more sensitive to repellent so much as more creative with it: hands go into mouths and eyes within minutes. Nearly every rule on the label is about that.
- Sunscreen first, repellent second (CDC), and skip combination bottles. CDC's travel guidance says to avoid sunscreen-plus-repellent products, and notes DEET on top of sunscreen can cut the sunscreen's SPF by about a third, so re-apply sunscreen more often.
- Spray into your own hands, then spread it on. Never spray toward a child's face; rub a thin layer around it with your fingertips, staying clear of eyes and mouth.
- Skip their hands entirely. EPA's wording is blunt: don't apply to children's hands. Leave out cuts and irritated skin too.
- Keep the bottle out of reach. Kids don't apply their own repellent, however much they insist.
- Wash it off at the end of the day. Soap and water or the evening bath, plus a wash for the clothes it went on.
Then let fabric do the heavy lifting: a light long-sleeved layer covers more skin, for longer, than any bottle. For timing on a long day out, plug the child's age and your product into the repellent duration calculator.
Why dengue zones make this non-optional
CDC's March 2025 health advisory on dengue singled out the groups most at risk of severe illness, and the list starts with infants aged one year and younger, alongside pregnant women and adults over 65. That's why "she's too little for spray" can't end with nothing: it has to end with a net.
The mosquito behind dengue, Aedes, bites in daylight, with peaks after sunrise and before sunset. For families that moves the risk to exactly where a baby spends the day: the stroller parked under a café's shade tree, the hotel-garden nap, the beach umbrella. A fitted net over the stroller and the travel cot covers all three. Our dengue-zone daily routine has the full hour-by-hour plan, and the destination briefings for Thailand, Malaysia and Barbados cover the local versions.
Pregnant: the repellent is the easy part
CDC's answer on the spray itself is unusually direct: EPA-registered repellents are safe and effective in pregnancy and while breastfeeding, used as directed. If your trip includes woods or long grass, treated clothing and repellent also cover ticks, and our sister site TickWise has the tick-removal steps for anyone in the family who picks one up. The harder question for pregnant travelers is the destination, and that changes with CDC's travel notices. As of late October 2026:
CDC advises pregnant travelers to avoid areas with an active Zika notice. The only one is Bali (Level 2, issued Aug 7, 2026). Elsewhere with current or past Zika, CDC says talk to your healthcare provider before going.
CDC asks pregnant travelers to reconsider non-essential trips to areas with a Level 2 Oropouche notice. None is active, but Brazil reported cases in 2024–25. It's spread mostly by biting midges, so screens and air-con matter.
CDC's global dengue notice (Level 1, Oct 2, 2026) lists Colombia, Costa Rica, Cuba, Ecuador, Panama, Malaysia, Vietnam, Sri Lanka and others. Pregnancy is on CDC's severe-dengue risk list.
"Early pregnancy and Rio": what CDC's pages say today. Brazil has no active Zika or Oropouche notice as of October 2026, but both viruses have circulated there: PAHO counted 2025 Oropouche cases mainly in Espírito Santo and Rio de Janeiro states. Dengue hit records too, with over 10 million reported cases in 2024 (OpenDengue), about seven times Brazil's 2015–19 yearly average. Rio de Janeiro state is also in CDC's yellow fever vaccination area for travelers 9 months and older, and that vaccine is live, which makes it a specific pregnancy conversation.
None of that is a verdict; it's the agenda for the appointment. Take your exact itinerary to your OB or a travel-medicine clinic, and check CDC's travel notices the week you book and again the week you fly. Zika can also spread sexually, so CDC's guidance covers partners and the timing of conception after travel as well.
The family kit
- A fitted stroller or carrier net, plus one for the travel cot: the only protection a newborn gets, and the daytime-nap fix for everyone else.
- Picaridin 20% for the adults, and for children over 2 months where the label allows: odorless, no greasy feel, safe on stroller fabric and car seats.
- Permethrin for the grown-ups' clothes, treated at home 48 hours before the flight, so the people carrying the baby aren't the ones getting bitten.
- Long, light layers for the kids: cotton or linen sleeves beat a third coat of spray.
Parent questions
Can I put mosquito repellent on my newborn?
Not before 2 months. CDC and the American Academy of Pediatrics both say no insect repellent on babies younger than 2 months. Protect them with mosquito netting over the stroller or carrier, clothing that covers arms and legs, and sleep in a screened or air-conditioned room.
What is the safest mosquito repellent for a baby over 2 months?
An EPA-registered DEET product at 30% or less (the American Academy of Pediatrics' cap for children), picaridin, or IR3535, used as the label directs. No single one is the safe choice; how you apply it matters more. Put it on your own hands first, then on the child, and keep it off their hands, eyes and mouth. Skip oil of lemon eucalyptus and PMD until age 3.
Is DEET safe for kids?
Yes, when used as directed. EPA has approved DEET for children with no age or concentration restriction, and the American Academy of Pediatrics recommends products with no more than 30% DEET for children. Higher percentages make protection last longer, not work better.
Can toddlers use oil of lemon eucalyptus?
CDC says do not use products containing oil of lemon eucalyptus or PMD on children under 3, and most labels say the same. EPA now lets some products with OLE as the only active ingredient, at 30% or less, drop that restriction, so check the label. Before age 3, DEET up to 30%, picaridin or IR3535 are the simpler choices.
Is mosquito repellent safe during pregnancy?
Yes. CDC says that when used as directed, EPA-registered insect repellents are proven safe and effective, even for pregnant and breastfeeding women. For pregnant travelers the bigger question is the destination: CDC advises avoiding areas with an active Zika travel health notice, which as of October 2026 means Bali, and reconsidering non-essential travel to areas with a Level 2 Oropouche notice.
Travel notices change quickly; the Zika, Oropouche and dengue notes above reflect CDC's pages as of October 25, 2026. Nothing here replaces your pediatrician, OB or travel clinic.